PS Engineering
PMA450 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-450-0000
Page 1-2
Rev. 6, Dec. 2015
Instrument Landing System (ILS) approach. A pushbutton labeled MKR allows the pilot select audio on as
well as test and mute modes. Marker high sensatvoty is also controlled by this button (see § S/N and
above). Below S/N high sense is switched externally (see §
2.6.2
for details.
The front panel USB-type connector is available for charging devices, such as iPad or cell phones. Up to 10
Watts are available. This connector
does NOT
provide any data interface.
In the PMA450, a Bluetooth® wireless interface is available for wireless telephone and music connection.
1.4
APPROVAL BASIS
FAA TSO Approval
The PMA450-series Audio Selector Panels are FAA approved under TSO C139A (Audio Amplifiers) TSO
C35d (Marker Beacon Receivers) and C71 (DC Power Supplies)
All systems comply with relevant portions of EUROCAE RTCA MPS WG No. 7/70, DO-143 and (
Marker
Beacon Receivers
), ED-14C/DO-160G (
Environmental Conditions and Test Procedures for Airborne
Equipment
), ED12B/DO-178B, Level D (
Software Considerations for Airborne Equipment
) and ED-
18/DO-214A (
Audio Systems Characteristics and Minimum Operational Performance Standards for Air-
craft Audio Systems
).
1.1.1
Limitations
This article meets the minimum performance and quality control standards required by a technical standard
order (TSO). Installation of this article requires separate approval.
Refer to Advisory Circular 20-41A for information on TSO installation approval.
Operation is subject to the following conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may cause undesired opera-
tion.
1.5
SPECIFICATIONS
TSO COMPLIANCE
Marker Beacon
:
FAA TSO C35d, Class A
Audio Selector/Intercom
:
FAA TSO C139a, Class 1a
DC Charging Jack
FAA TSO C71
APPLICABLE DOCUMENTS:
RTCA/DO-214A RTCA/DO-143 RTCA/DO-
160G
RTCA/DO-178C, DO-254
Depth behind panel 7.15 in. (18.16 cm)
WEIGHT
PMA450 Unit
Rack with connectors
1.34 lb. (0.61 kg)
0.51 lb. (0.24 kg)
POWER REQUIREMENTS
(Including Internal Lighting):
Voltage
:
11 to 33 VDC
Maximum Current
:
3.5 Amp (Externally protected by a 5A pull-type break-
er)
ENVIRONMENTAL Qualifications
:
A1D1CABSMXXXXXXZBABATBXXE2XXX
Operating Temperature Range:
-15º C to 55ºC
Altitude
:
Up to 35,000 feet in an non-pressurized area
DIMENSIONS:
Height: 1.3 in. (3.3 cm) Width: 6.25 in. (1
5
.9 cm)